Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/30854 |
Resumo: | Aim: The aim of this study was to analyze the water quality of a tropical, semi-arid reservoir after a reflooding. In terms of impact on water quality after a drought event, it is expected that there will be improvements with the reflooding. Less algal biomass, increased water transparency, decreased turbidity and low nutrient concentration. Methods: This study was performed in a tropical, semi-arid man-made lake (Dourado Reservoir), during an extended drought period. This study consisted of a comparison of three distinct periods determined by water accumulation. The limnological variables, including water transparency, turbidity, electrical conductivity, pH, total phosphorus, soluble reactive phosphorus, and chlorophyll-a were analyzed. A principal component analysis (PCA) was also performed to verify the patterns of the variables in relation to the sample units in the studied periods. Results: After water renewal, there was an expressive reduction in chlorophyll-a. Electrical conductivity, pH, and turbidity variables also reduced after the reflooding, indicating an improvement in water quality. There was no reduction in total phosphorus and soluble reactive phosphorus after the reflooding compared to the previous periods. Conclusions: The significant reduction in algal biomass after reflooding in Dourado indicates water quality improvement in terms of eutrophication due to the change of the trophic state from eutrophic to mesotrophic |
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Becker, VanessaLeite, Jéssica Nayara de Carvalho2020-12-07T13:28:57Z2020-12-07T13:28:57Z2019-05-16LEITE, Jéssica Nayara de Carvalho; BECKER, Vanessa. Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event. Acta Limnologica Brasiliensia, [S.L.], v. 31, p. 1-9, 2019. FapUNIFESP (SciELO). Disponível em <https://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2019000100313&tlng=en>. Acesso em 20 out 2020. http://dx.doi.org/10.1590/s2179-975x6918.2179-975Xhttps://repositorio.ufrn.br/handle/123456789/3085410.1590/s2179-975x6918Aim: The aim of this study was to analyze the water quality of a tropical, semi-arid reservoir after a reflooding. In terms of impact on water quality after a drought event, it is expected that there will be improvements with the reflooding. Less algal biomass, increased water transparency, decreased turbidity and low nutrient concentration. Methods: This study was performed in a tropical, semi-arid man-made lake (Dourado Reservoir), during an extended drought period. This study consisted of a comparison of three distinct periods determined by water accumulation. The limnological variables, including water transparency, turbidity, electrical conductivity, pH, total phosphorus, soluble reactive phosphorus, and chlorophyll-a were analyzed. A principal component analysis (PCA) was also performed to verify the patterns of the variables in relation to the sample units in the studied periods. Results: After water renewal, there was an expressive reduction in chlorophyll-a. Electrical conductivity, pH, and turbidity variables also reduced after the reflooding, indicating an improvement in water quality. There was no reduction in total phosphorus and soluble reactive phosphorus after the reflooding compared to the previous periods. Conclusions: The significant reduction in algal biomass after reflooding in Dourado indicates water quality improvement in terms of eutrophication due to the change of the trophic state from eutrophic to mesotrophicObjetivo: O objetivo deste estudo foi analisar a qualidade da água de um reservatório do semiárido tropical após esgotamento hídrico durante um evento de seca prolongada. Em termos de impactos na qualidade da água, após um evento de esgotamento hídrico é esperado que haja melhorias com a renovação das águas. Menor biomassa algal, maior transparência da água, menor turbidez e baixa concentração de nutrientes. Métodos: O reservatório estudado foi Dourado, localizado no semiárido brasileiro. O trabalho foi realizado com três períodos distintos, determinados de acordo com o volume hídrico. Os períodos foram marcados por chuvas abaixo da média histórica anual, estando assim inseridos em um período de estiagem prolongada. Foram analisadas as variáveis transparência da água, turbidez, condutividade elétrica, pH, fósforo total, fósforo reativo dissolvido e clorofila-a. Foi também realizada uma análise de componentes principais (ACP) para verificar os padrões das variáveis em reação às unidades amostrais. Resultados: Após a renovação das águas, houve uma expressiva redução na clorofila-a. As variáveis condutividade elétrica, pH e turbidez também sofreram redução após a renovação das águas. Não houve redução após o aporte de água para fósforo total e fósforo reativo dissolvido, em comparação aos períodos anteriores. Conclusões: A significativa redução da biomassa algal após a reinundação de Dourado indica melhora na qualidade da água em termos de eutrofização, diante da mudança do estado de trofia de eutrófico para mesotróficoAssociação Brasileira de LimnologiaAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessMan-made lakesShallowDrylandsEutrophicationImpacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought eventinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALImpactsOfDryingRndReflooding_Becker_2019.pdfImpactsOfDryingRndReflooding_Becker_2019.pdfapplication/pdf1189071https://repositorio.ufrn.br/bitstream/123456789/30854/1/ImpactsOfDryingRndReflooding_Becker_2019.pdfba0579623608bc5786e91fec3d624047MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/30854/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/30854/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53TEXTImpactsOfDryingRndReflooding_Becker_2019.pdf.txtImpactsOfDryingRndReflooding_Becker_2019.pdf.txtExtracted texttext/plain31948https://repositorio.ufrn.br/bitstream/123456789/30854/4/ImpactsOfDryingRndReflooding_Becker_2019.pdf.txta721de9d97210818c292f7fe9378130aMD54THUMBNAILImpactsOfDryingRndReflooding_Becker_2019.pdf.jpgImpactsOfDryingRndReflooding_Becker_2019.pdf.jpgGenerated Thumbnailimage/jpeg1679https://repositorio.ufrn.br/bitstream/123456789/30854/5/ImpactsOfDryingRndReflooding_Becker_2019.pdf.jpg288e3dfff92441dc8ab822452f7a68c9MD55123456789/308542020-12-13 05:01:13.526oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-12-13T08:01:13Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event |
title |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event |
spellingShingle |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event Becker, Vanessa Man-made lakes Shallow Drylands Eutrophication |
title_short |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event |
title_full |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event |
title_fullStr |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event |
title_full_unstemmed |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event |
title_sort |
Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event |
author |
Becker, Vanessa |
author_facet |
Becker, Vanessa Leite, Jéssica Nayara de Carvalho |
author_role |
author |
author2 |
Leite, Jéssica Nayara de Carvalho |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Becker, Vanessa Leite, Jéssica Nayara de Carvalho |
dc.subject.por.fl_str_mv |
Man-made lakes Shallow Drylands Eutrophication |
topic |
Man-made lakes Shallow Drylands Eutrophication |
description |
Aim: The aim of this study was to analyze the water quality of a tropical, semi-arid reservoir after a reflooding. In terms of impact on water quality after a drought event, it is expected that there will be improvements with the reflooding. Less algal biomass, increased water transparency, decreased turbidity and low nutrient concentration. Methods: This study was performed in a tropical, semi-arid man-made lake (Dourado Reservoir), during an extended drought period. This study consisted of a comparison of three distinct periods determined by water accumulation. The limnological variables, including water transparency, turbidity, electrical conductivity, pH, total phosphorus, soluble reactive phosphorus, and chlorophyll-a were analyzed. A principal component analysis (PCA) was also performed to verify the patterns of the variables in relation to the sample units in the studied periods. Results: After water renewal, there was an expressive reduction in chlorophyll-a. Electrical conductivity, pH, and turbidity variables also reduced after the reflooding, indicating an improvement in water quality. There was no reduction in total phosphorus and soluble reactive phosphorus after the reflooding compared to the previous periods. Conclusions: The significant reduction in algal biomass after reflooding in Dourado indicates water quality improvement in terms of eutrophication due to the change of the trophic state from eutrophic to mesotrophic |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-05-16 |
dc.date.accessioned.fl_str_mv |
2020-12-07T13:28:57Z |
dc.date.available.fl_str_mv |
2020-12-07T13:28:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
LEITE, Jéssica Nayara de Carvalho; BECKER, Vanessa. Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event. Acta Limnologica Brasiliensia, [S.L.], v. 31, p. 1-9, 2019. FapUNIFESP (SciELO). Disponível em <https://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2019000100313&tlng=en>. Acesso em 20 out 2020. http://dx.doi.org/10.1590/s2179-975x6918. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/30854 |
dc.identifier.issn.none.fl_str_mv |
2179-975X |
dc.identifier.doi.none.fl_str_mv |
10.1590/s2179-975x6918 |
identifier_str_mv |
LEITE, Jéssica Nayara de Carvalho; BECKER, Vanessa. Impacts of drying and reflooding on water quality of a tropical semi-arid reservoir during an extended drought event. Acta Limnologica Brasiliensia, [S.L.], v. 31, p. 1-9, 2019. FapUNIFESP (SciELO). Disponível em <https://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2019000100313&tlng=en>. Acesso em 20 out 2020. http://dx.doi.org/10.1590/s2179-975x6918. 2179-975X 10.1590/s2179-975x6918 |
url |
https://repositorio.ufrn.br/handle/123456789/30854 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
publisher.none.fl_str_mv |
Associação Brasileira de Limnologia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
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Universidade Federal do Rio Grande do Norte (UFRN) |
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UFRN |
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UFRN |
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Repositório Institucional da UFRN |
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Repositório Institucional da UFRN |
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